Sui ("Water")~~~[note: according to this Japanese Wikipedia entry on items from Dragonball, 'choushinsui' can refer both to a drink that brings forth your latent powers but so toxic it will kill you unless you have incredible life force and strength of mind (out of 15 people who drank it, all but Goku were killed), or, (in the anime) to a divine liquid that has the power to purify any poison or toxin that has ever existed]